[PATCH] aoe: Use helper function IS_ERR_OR_NULL()

[wangkaiyuan]

Use IS_ERR_OR_NULL() to detect an error pointer or a null pointer
open-coding to simplify the code.

Signed-off-by: wangkaiyuan <wangkaiyuan@xxxxxxxxxx>
---
 drivers/block/aoe/aoecmd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/block/aoe/aoecmd.c b/drivers/block/aoe/aoecmd.c
index d7317425be51..94a7aa6cf58a 100644
--- a/drivers/block/aoe/aoecmd.c
+++ b/drivers/block/aoe/aoecmd.c
@@ -1256,7 +1256,7 @@ aoe_ktstart(struct ktstate *k)
 
 	init_completion(&k->rendez);
 	task = kthread_run(kthread, k, "%s", k->name);
-	if (task == NULL || IS_ERR(task))
+	if (IS_ERR_OR_NULL(backend))
 		return -ENOMEM;
 	k->task = task;
 	wait_for_completion(&k->rendez); /* allow kthread to start */
-- 
2.31.1